882  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 560 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1100 cents. How many 5-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 220장을 사고, 1700 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 140 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 6-cent stamps are there?

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